#bott {
    float: left;
    margin-bottom: 0;
    width: 100%;
    height: 200px;
    color: black;
    font-size: 14px;
    font-weight: 400;
}

.d1 {
    margin-top: -63px;
    background-color: black;
    width: 820px;
}

#card1 {
    width: 270px;
    padding-left: 70px;
    padding-top: 20px;
}

#card2 {
    width: 250px;
    padding-left: 30px;
    padding-top: 20px;
}

#card3{
    width: 600px;
    margin-left: -50px;
    padding-left: 40px;
    padding-top: 20px;
}

#ds>ul {
    list-style: none;
}
#dx>li {
    list-style: none;
}

.dx1 {
    padding-top: 40px;
    padding-left: 780px;
}
.dx1 img{
    width: 15px;
    height: 15px;
}
.vechat {
    padding-left: 550px;
}

#vechatT {
    width: 30px;
    height: 30px;
    margin-top: 30px;
}

#weixin {
    position: absolute;
    display: none;
}

.vechat:hover #weixin {
    display: block;
    margin: 0 0 0 -20px;
}

#vechatT1 {
    margin-left: -3px;
    margin-top: -4px;
}

#weiboT {
    width: 30px;
    height: 30px;
    margin-top: 30px;
}

#weiboT1 {
    margin-left: -3px;
    margin-top: -4px;
}